Rotary harrow



A. O. JONES.

ROTARY vHARROW.

APPLICATION FILED JAN. 26. 1920.

Patented May 10, 1921.

'2 SHEETS-SHEET l.

INVENTOR ALA 5x4 0. J'o/vss.

A. 0. JONES.

ROTARY HARROW.

APPLICATION FILED JAN. 26, I920. I 1,377,586. Patented May 10,1921.

2 SHEETS-SHEET 2.

INVENTOR ALASKA QJ'ONE6.

UNETEE STATES ALASKA 0. JONES, 01E KOKOMO, INDIANA.

ROTARY HARBOW.

Application filed. January 26, 1920.

and so suspending the same that it may be rotated as it moves over the surface of the soil.

A. further feature of the invention is the provision of a drlvlng shaft and means 00-* operating therewith for rotating the frame, means being provided for connecting or disconnecting the driving mechanism and the frame.

A further feature of the invention is the provision of means for raising and lowering the tooth carrying frame and a further feature of the invention is the provision of means for tilting the tooth carrying frame and holding the same in its tilted position.

Other objects and advantages will be hereinafter more fully set forth and pointed. out in the accompanying specification.

In the accompanying drawings which are made a part of this application,

Figure 1 is a top plan view of the harrow structure.

Fig. 2 is a rear elevation thereof.

Fig. 3 is a vertical sectional view through the harrow.

Fig. 4 is a detail sectional view showing the gear shifting mechanism.

Fig. 5 is a detail view of a portion of the frame showing a different form of soil agitating means thereon.

Referring to the drawings in which similar reference numerals designate corresponding parts throughout the several views, 1 indicates a frame, the rear end of which is mounted upon an axle 2, said axle having its ends attached to supporting wheels 3. The forward end of the frame 1 is mounted upon a guide wheel 4 of the usual or any preferred construction, the yoke 5, carrying the wheel 4: being swiveled to the frame 1.

Mounted upon the axle 2 is a gear 6, which is slidably mounted on the axle and caused to rotate therewith by means of a spline 7, the gear being shifted longitudinally on the ax e to move the same into or Specification of Letters Patent.

Patented May 10, 1921.

Serial No. 353,943.

out of mesh with a bevel pinion 8 in any suitable manner, as by means of a lever 9.

the inner end of which enters a groove 10 in the face of a sleeve 11 attached to the gear 6, the outer end of the lever cooperating with a rack 12 for holding the lever in adjusted position.

The pinion 8'is attached to the upper portion of a vertically extending shaft 13 and on said shaft 13 is slidably mounted a frame 14, to which is attached any preferred form of soil pulverizing means, such as teeth 15, as shown in Figs. 2 and 3, or cut ting disks 16 as shown in Fig. 5. the frame 14 being caused to rotate with said shaft 13 by means of a key 17.

I The frame 1% is raised and lowered on the shaft 13 by placing a collar 18 around the upper end of the hub 19 of the frame, said hub having a circumferential channel 20 mto which takes a tongue 21 on the collar 18, and extending upwardly from the collar 18 are links 22, said links having teeth 23 formed thereon with which cooperate pinions 24:, carried by a shaft 25.

vThe shaft 25 is rotatably mounted in standards 26, which project upwardly from a casing 27 employed for inclosing the gears 6 and 8. One end of the shaft 25 has a Wheel 28 attached thereto for applying rotating motion to the shaft 25 and the shaft is held against reverse rotation by a pawl and ratchet construction 29.

The frame 14 may be tilted so as to elevate the forward edge thereof through the medium of a rod 30 and a lever 31, the lever being pivotally mounted upon the frame 1 and carrying a latch 32 for engagement with a rack 33, the forward end of the rod being engaged with the lever 31 by a chain 34;, while the opposite end of the rod is attached to the collar 18.

In operating the harrow construction, the hand wheel 28 is operated to lower the frame 14 to bring the pulverizing attachments thereon into engagement with the soil and the lever 9 operated to move the gear 6 into engagement with the pinion 8, when, by moving the entire device forwardly, the frame 14: will be caused to revolve as it is moved forwardly and consequently more thoroughly pulverize the soil.

If it be desired to raise the forward portion of the frame 141: so that the frame will more readily travel over the soil, the lever 31 is thrown forwardly which tilts the frame 14% at an angle to the surface of the soil. If it be desired to more thoroughly disintegrate the soil, as in the case of sod, disks, as shown in Fig. 5 are used, they serving to cutthe soil.

As shown, this device is drawn over the soil by a tractor, but it may be drawn by animals if preferred.

The invention claimed is:

1. In a harrow construction, a revolving frame including a central hub, said hub having a circumferentialchannel adjacent its upper end, a collar surrounding the upper end of said hub, a tongue on said collar adapted to enter said channel, a rod connected at one end to said collar, and a lever to which the opposite end of said rod is connected for regulating the angle of said frame.

2. fr harrow construction including an axle, driving wheels on said axle, a driving on said axle, a pinion cooperating with said gear, a shaft carrying said pinion, a frame slidable on said shaft, cultivating means carried by the frame, a casing inclosing said gear and pinion and swinging on said axle coincident to the swinging movement of the frame, and means carried by the casing for raising and lowering said frame.

3. A harrow construction including a driven axle, a bevel gear adjustably mount-- ed on said axle and rotatable therewith, a pinion cooperating with said gear, a shaft driven by said pinion, a frame adjustably mounted upon and rotatable with said shaft,-

a casing inclosing said gear and pinion, standards carried by said casing, a shaft carried by said standards, cog pinions carried by said shaft, and links attached to said frame having racks thereon for raising and lowering said frame when the last shaft is rotated, said casing having swinging movement and the parts associated therewith having swinging movement coincident to the swinging movement of the frame.

4. In a harrow construction, an axle, a casing carried by said axle. a shaft depending from said casing, a frame, a hub on said frame through which said shaft projects, said hub having a circumferential channel near its upper end, a collar surrounding said hub, a tongue on said collar adapted to enter said channel, means on said collar and casing for raising and lowering said frame, and means connected with said collar for determining the 'angle of said frame. I

In testimony whereof I hereto affix my signature.

ALasKA o, JONES. 

